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NSLS-II User Guide

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Proposal Scoring

General User Proposal Cutoff Scores and Beamline Subscription Rates

All NSLS-II proposals are scored on a scale of 1 to 5, with 1 being the best. Beam time is allocated based on a proposal's score compared to all other proposals for a given beamline in a given cycle. Proposals receiving a rating greater than 4 are automatically expired and no beam time request may be submitted for that proposal in a future cycle.

In general, the following descriptions serve as guidelines to the ratings.

  1. The highest rated proposals will be highly innovative with revolutionary or transformative societal impact or scientific importance.  The proposed research will significantly advance knowledge in a specific scientific discipline or address critical open questions in a particular field.  The potential for publication in a leading scientific journal is very high, and the capabilities characteristics of the NSLS-II are critical for the success of the proposed work.  Generally, these proposals have very well-developed experiment plans that address all phases of a successful experiment such as pre-measurement preparations, data collection methods, data analysis, additional ancillary measurements and theoretical calculations.
  2. These excellent proposals represent high quality, cutting edge research that has significant societal or scientific impact.  The proposed research has potential for making an important contribution to a specific field or scientific discipline.  The work is likely to be published in a leading scientific journal, and the capabilities characteristics of the NSLS-II are important to the success of the proposed work.  These proposals typically have well-developed experiment plans that address the important phases of a successful experiment. 
  3. These proposals represent good, near-cutting edge research that has direct societal or scientific importance.  The research goals have potential for making notable contributions to a specific field or scientific discipline.  The work is likely to be published in a respected scientific journal, and the capabilities characteristics of the NSLS-II would benefit the proposed work.  The experiment plan is sufficiently well developed to assure a successful result. 
  4. These proposals represent interesting research that may or may not have direct societal or scientific importance.  The research goals might influence a specific field or scientific discipline.  The work might be published in a scientific journal, but the capabilities characteristics of the NSLS-II might not be required to accomplish the research goals.  The experiment plan may be lacking sufficient details to assure a successful result. 
  5. These proposals represent research that does not appear to have direct social or scientific importance.  The work might not be publishable in a scientific journal, and synchrotron radiation might not be required to accomplish the research goals.  The experiment plan might be missing key elements to assure a successful result.

If a proposal did not receive beam time in a given cycle, the score of the proposal is improved, or “aged,” by 0.2 points. The proposal will retain this aged score until it either (1) receives beam time, or (2) expires.  Once an aged proposal is allocated beam time, the score reverts to its original value. A proposal cannot be aged more than once.

Proposal Cutoff Score

Beamline Subscription Rate